Glad to help, you may already have the following.
Thomas Milton Robertson (12/7/1842(MS)-11/5/1933(LA)) was a resident of Copiah County in the 1850 & 1860 census. At the end of the war he was a member of Company E, 24th. Battalion Miss. Cavalry (Moorman's) and appears as T.M. Robertson on a roll of soldiers surrendered by Gen. Taylor on May 4, 1865 at Citronelle, AL and paroled May 19, 1865 at Jackson, MS.
After the war he moved to Louisiana and lived in Catahoula and LaSalle Parishes. The LA Confederate Pension index indicates he filed in Catahoula and the LA Death index indicates he died in neighboring LaSalle Parish.
Thomas and his wife, Frances, are buried in the Old Jordan Cemetery in Aimwell, Catahoula Parish, Louisiana.